What defines a chronic illness? What psychosocial issues do patients with somatic diseases face? What does psychosocial comorbidity mean, and how is it identified and treated? These and other pressing questions are posed by psychologists working in rehabilitation, whether in an inpatient medical rehabilitation facility or, for example, in a vocational training center for youth with learning disabilities. This book provides a clear and understandable introduction to the psychological diagnostics, therapy, and aftercare of chronically ill individuals and those at risk of participation restrictions. Additionally, rehabilitation concepts are explained through case studies that relate to different biographical stages of a person's life. Prof. Dr. Nicola Wolf-Kühn is a lecturer in rehabilitation.